Apparently, this ford is the most frequent cause of failures:
Twelve of our top 20 flood-related breakdown sites are at fords, and our number one flood accident hotspot is the ford on Rufford Lane in Newark, Nottinghamshire – with 96 flood-related rescues in the five years from 2009.
Ha, I just looked at Rufford Ford, and there's one not-very-visible 'Ford' warning sign either side. That's it. The one to the east is 300 yards away and the one to the west is at 120 yards.
The name of the stream is excellent: Rainworth Water.
Apparently, this ford is the most frequent cause of failures:
https://www.theaa.com/driving-advice/seasonal/crossing-a-ford
Key advice:
What I didn't know is that there are more than 2,000 fords in the UK.